package net.sourceforge.fenixedu.presentationTier.Action.spaceManager;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.fenixedu.applicationTier.Filtro.exception.FenixFilterException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.dataTransferObject.spaceManager.MaterialTypeBean;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;
import net.sourceforge.fenixedu.domain.space.MaterialSpaceOccupation;
import net.sourceforge.fenixedu.domain.space.SpaceInformation;
import net.sourceforge.fenixedu.presentationTier.Action.base.FenixDispatchAction;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import pt.ist.fenixWebFramework.renderers.components.state.IViewState;
import pt.ist.fenixWebFramework.renderers.utils.RenderUtils;
import pt.ist.fenixWebFramework.services.ServiceManager;
import pt.ist.fenixWebFramework.services.ServiceManagerException;

public class ManageMaterialSpaceOccupationsDA extends FenixDispatchAction {

    public ActionForward showMaterialSpaceOccupations(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) {

	readAndSetSpaceInformation(request);
	return mapping.findForward("showMaterialSpaceOccupations");
    }

    public ActionForward prepareInsertMaterialOccupation(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws FenixFilterException, FenixServiceException {

	IViewState viewState = RenderUtils.getViewState("materialTypeWithMaterial");
	if (viewState != null) {
	    MaterialTypeBean materialTypeBean = (MaterialTypeBean) viewState.getMetaObject().getObject();
	    if (materialTypeBean.getMaterialType() == null) {
		addActionMessage(request, "error.material.not.found");
	    }
	}
	viewState = (viewState == null) ? RenderUtils.getViewState("materialTypeToCreate") : viewState;
	return setMaterialTypeBean(mapping, request, viewState);
    }

    public ActionForward prepareChooseMaterial(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws FenixFilterException, FenixServiceException {

	IViewState viewState = RenderUtils.getViewState();
	RenderUtils.invalidateViewState();
	return setMaterialTypeBean(mapping, request, viewState);
    }

    public ActionForward prepareEditMaterialSpaceOccupation(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws FenixFilterException, FenixServiceException {

	readAndSetSpaceInformation(request);
	MaterialSpaceOccupation materialOccupation = getMaterialOccupationFromParameter(request);
	request.setAttribute("materialSpaceOccupation", materialOccupation);
	return mapping.findForward("prepareEditMaterialSpaceOccupation");
    }

    public ActionForward deleteMaterialSpaceOccupation(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws FenixFilterException, FenixServiceException {

	MaterialSpaceOccupation materialOccupation = getMaterialOccupationFromParameter(request);
	Class occupationClass = materialOccupation.getMaterial().getMaterialSpaceOccupationSubClass();

	try {
	    ServiceManager.invokeServiceByName(
		    "net.sourceforge.fenixedu.applicationTier.Servico.space.DeleteMaterialSpaceOccupation", "run",
		    new Object[] { occupationClass.cast(materialOccupation) });
	} catch (DomainException e) {
	    addActionMessage(request, e.getMessage());
	} catch (ServiceManagerException e) {
	    addActionMessage(request, e.getMessage());
	}
	readAndSetSpaceInformation(request);
	return mapping.findForward("showMaterialSpaceOccupations");
    }

    public ActionForward prepareChooseMaterialType(ActionMapping mapping, ActionForm form, HttpServletRequest request,
	    HttpServletResponse response) throws FenixFilterException, FenixServiceException {

	SpaceInformation spaceInformation = readAndSetSpaceInformation(request);
	request.setAttribute("materialTypeBean", new MaterialTypeBean(spaceInformation));
	return mapping.findForward("insertMaterialOccupation");
    }

    private ActionForward setMaterialTypeBean(ActionMapping mapping, HttpServletRequest request, IViewState viewState) {
	final MaterialTypeBean materialTypeBean = (MaterialTypeBean) viewState.getMetaObject().getObject();
	request.setAttribute("materialTypeBean", materialTypeBean);
	return mapping.findForward("insertMaterialOccupation");
    }

    private SpaceInformation readAndSetSpaceInformation(HttpServletRequest request) {
	final SpaceInformation spaceInformation = getSpaceInformationFromParameter(request);
	request.setAttribute("selectedSpaceInformation", spaceInformation);
	request.setAttribute("selectedSpace", spaceInformation.getSpace());
	return spaceInformation;
    }

    private SpaceInformation getSpaceInformationFromParameter(final HttpServletRequest request) {
	final String spaceInformationIDString = request.getParameterMap().containsKey("spaceInformationID") ? request
		.getParameter("spaceInformationID") : (String) request.getAttribute("spaceInformationID");
	final Integer spaceInformationID = spaceInformationIDString != null ? Integer.valueOf(spaceInformationIDString) : null;
	return rootDomainObject.readSpaceInformationByOID(spaceInformationID);
    }

    private MaterialSpaceOccupation getMaterialOccupationFromParameter(final HttpServletRequest request) {
	final String materialOccupationIDString = request.getParameterMap().containsKey("materialOccupationID") ? request
		.getParameter("materialOccupationID") : (String) request.getAttribute("materialOccupationID");
	final Integer materialOccupationID = materialOccupationIDString != null ? Integer.valueOf(materialOccupationIDString)
		: null;
	return (MaterialSpaceOccupation) rootDomainObject.readResourceAllocationByOID(materialOccupationID);
    }
}